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Table 3.

Morphological parameters, air temperature and maximum vertical force production for two orchid bee species in each of 2 years, and results of an ANOVA evaluating between-year differences in the means

Euglossa imperialis
Eulaema nigrita
19971998P (d.f.=1,27)19971998P (d.f.=1,15)
m (mg) 166.3±24.5 165.5±21.8 0.93 414.1±62.5 378.7±20.2 0.20 
mth (mg) 63.7±7.3 64.1±6.8 0.88 162.6±20.2 163.2±14.0 0.95 
ma (mg) 44.2±12.0 46.2±10.8 0.66 140.9±47.6 111.6±16.0 0.17 
S (cm20.368±0.02 0.350±0.031 0.09 0.753±0.05 0.733±0.07 0.52 
R (cm) 1.11±0.04 1.10±0.03 0.39 1.56±0.07 1.54±0.04 0.54 
AR 6.70±0.27 6.93±0.40 0.09 6.44±0.22 6.47±0.41 0.83 
pw (N m-222.1±2.6 23.2±2.0 0.24 26.9±3.1 25.4±2.2 0.33 
T (°C) 24.9±1.5 28.8±0.7 <0.001*** 26.4±1.7 28.3±0.5 0.015* 
Fvert/mg 2.01±0.12 thin string: 1.49±0.33 a 2.13±0.25 thin string: 2.05±0.39 a 
  thick string: 1.37±0.24 a  thick string: 1.85±0.34 a 
Euglossa imperialis
Eulaema nigrita
19971998P (d.f.=1,27)19971998P (d.f.=1,15)
m (mg) 166.3±24.5 165.5±21.8 0.93 414.1±62.5 378.7±20.2 0.20 
mth (mg) 63.7±7.3 64.1±6.8 0.88 162.6±20.2 163.2±14.0 0.95 
ma (mg) 44.2±12.0 46.2±10.8 0.66 140.9±47.6 111.6±16.0 0.17 
S (cm20.368±0.02 0.350±0.031 0.09 0.753±0.05 0.733±0.07 0.52 
R (cm) 1.11±0.04 1.10±0.03 0.39 1.56±0.07 1.54±0.04 0.54 
AR 6.70±0.27 6.93±0.40 0.09 6.44±0.22 6.47±0.41 0.83 
pw (N m-222.1±2.6 23.2±2.0 0.24 26.9±3.1 25.4±2.2 0.33 
T (°C) 24.9±1.5 28.8±0.7 <0.001*** 26.4±1.7 28.3±0.5 0.015* 
Fvert/mg 2.01±0.12 thin string: 1.49±0.33 a 2.13±0.25 thin string: 2.05±0.39 a 
  thick string: 1.37±0.24 a  thick string: 1.85±0.34 a 

Values are means ± 1 s.d.

mth, thoracic mass; ma, abdominal mass; S, total wing area; T, air temperature in flight chamber; other symbols as in Table 1. 

a

See text for between-year and between-string comparisons

*

P<0.05

***

P<0.001

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